Download the Hitachi HD LCD Controller Datasheet and browse our LCDs that use this controller. Version HDU (LCD-II) (Dot Matrix Liquid. Matrix Multimedia LCD Display LCD Display datasheet . Module uses a Samsung KSU controller, which is similar to the Hitachi HD controller. Advances in the features, miniaturization, and cost of LCD (Liquid Crystal Display ) Nearly every pixel-based alphanumeric LCD module made today uses the Hitachi HD LCD Table 1: Character LCD Pinout.

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Compatible LCD screens are manufactured in several standard configurations. Character LCDs use a 16 contact interface, commonly using pins or card edge connections on 0.

There are two primary considerations. A limited number of custom characters can datashert programmed into the device in the form of a bitmap using special commands. From Wikipedia, the free encyclopedia. First, with D3-D0 unconnected, these lines will always hitachii low 0b to the HD when it is in 8-bit mode. All articles with unsourced statements Articles with unsourced statements from June Commons category link is on Wikidata Commons category link is on Wikidata using P The most commonly manufactured larger configuration is 40×4.


More recent compatible chips are available with higher resolution, matched to displays with more pixels. Returns cursor to home position.

Hitachi HD44780 LCD controller

The Hitachi HD LCD controller is limited to monochrome text displays and is often used in copiersfax machineslaser printersindustrial test equipment, networking equipment, such as routers and storage devices.

The HD instruction set is shown below: State3 may occur, for example, if a prior control was aborted after sending only the first 4 bits of a command while the LCD was in 4-bit mode.

Using an extension driver, the device can display up to 80 characters. This page was last edited on 17 Septemberat By using this site, you agree to the Terms of Use and Privacy Policy.

Download the Hitachi HD LCD Controller Datasheet Version

An Introduction to Software and Hardware Interfacing 2nd ed. Retrieved from ” https: Views Read Edit View history.

DDRAM content remains unchanged. Sanchez, Julio; Canton, Maria P. Once in 4-bit mode, character and control data are 16x as pairs of 4-bit “nibbles” on the upper data pins, D7-D4. Also returns display being shifted to the original position. The four most significant bits must be written first, followed by the four least significant bits Larger custom sizes are made with 32, 40 and 80 characters and with 1, 2, 4 or 8 lines.


Selecting 4-bit or 8-bit mode requires careful selection of commands. Hitachi Liquid crystal displays Display devices. The nominal operating voltage for LED backlights is 5V at full brightness, with dimming hittachi lower voltages dependent on the details such as LED color.

These characters have to be written to the device each time it is switched on, as they are stored in volatile memory. Non-LED backlights often require higher voltages. Second, the LCD may initially be in one of three states:. In other projects Wikimedia Commons. Two versions of the ROM have been developed: Those without backlights may have only 14 pins, omitting the two pins powering the light.